ENH: add boolField specializations: negate(), component()

ENH: added scalarField hypot() function

applications/test/field1/Make/files

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+Test-field1.C
+
+EXE = $(FOAM_USER_APPBIN)/Test-field1

applications/test/field1/Make/options

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+/* EXE_INC = */
+/* EXE_LIBS = */

applications/test/field1/Test-field1.C

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+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2019 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Description
+    Simple field tests
+
+\*---------------------------------------------------------------------------*/
+
+#include "primitiveFields.H"
+#include "IOstreams.H"
+
+using namespace Foam;
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+// Main program:
+
+int main(int argc, char *argv[])
+{
+    scalarField sfield(10, one());
+
+    forAll(sfield, i)
+    {
+        sfield[i] = (i % 4) ? i : 0;
+    }
+
+    Info<< "scalarField: " << sfield << nl;
+    sfield.negate();
+
+    Info<< "negated: " << sfield << nl;
+
+    // Does not compile (ambiguous)
+    // boolField lfield(10, one());
+
+    boolField lfield(10, true);
+
+    forAll(lfield, i)
+    {
+        lfield[i] = (i % 4) ? i : 0;
+    }
+
+    Info<< "boolField: " << lfield << nl;
+    lfield.negate();
+
+    Info<< "negated: " << lfield << nl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //